<template>
	<view class="cart-container" v-if="cart.length !== 0">
    <!-- 地址栏 -->
    <my-address></my-address>
    <!-- 购物车 -->
    <view class="">
      <!-- 标题 -->
      <view class="cart-title">
        <!-- 左侧图标 -->
        <uni-icons type="shop"></uni-icons>
        <!-- 描述文字 -->
        <text class="cart-title-text">购物车</text>
      </view>
      <uni-swipe-action>
        <!-- 商品列表区域 -->
        <block v-for="(item,i) in cart" :key='i'>
            <uni-swipe-action-item :right-options="options" @click='swipeActionClickHandler(item)'>
              <my-goods :goods="item" :showRaido="true" :showNum="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
            </uni-swipe-action-item>
        </block>  
      </uni-swipe-action>
    </view>
    <!-- 结算框 -->
    <my-settle></my-settle>
	</view>
  <!-- 空白购物车区域 -->
    <view class="empty-cart" v-else>
      <text class="tip-text">空空如也~</text>
    </view>
</template>

<script>
  import {mapGetters} from 'vuex'
  import {mapState} from 'vuex'
  import badgeMix from '@/mixins/tabbar-badge.js'
  import {mapMutations} from "vuex"
  
	export default {
    // 将badgeMix混入到当前页面中进行使用
    mixins:[badgeMix],
		data() {
			return {
        options:[
          {
            text:'删除',
            style:{backgroundColor:'#c00000'}
          }
        ]
      }
		},
    computed:{
      // 将m_cart模块中的total映射为当前页面的计算属性
      ...mapGetters('m_cart',['total']),
      // 将m_cart模块中的cart映射为当前页面的计算属性
      ...mapState('m_cart',['cart'])
    },
    onShow(){
      // 页面刚展示的时候，设置数字徽标
      this.setBadge()
    },
    onLoad(){
      console.log(this.cart)
    },
    methods:{
      ...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
      setBadge(){
        uni.setTabBarBadge({
          index:2,
          text:this.total + ''
        })
      },
      // 当勾选框状态发送变化
      radioChangeHandler(e){
        this.updateGoodsState(e)
      },
      // 数字框发生变化
      numberChangeHandler(e){
        this.updateGoodsCount(e)
      },
      // 点击了滑动操作按钮
      swipeActionClickHandler(goods){
        this.removeGoodsById(goods.goods_id)
      }
    }
	}
</script>

<style lang="scss">
  .cart-container {
    padding-bottom: 50px;
  }
.cart-title{
  height: 40px;
  display: flex;
  align-items: center;
  font-size: 14px;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text{
    margin-left:10px
  }
}
.empty-cart{
   display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 150px;
  .tip_text{
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
